diff --git a/input_output.c b/input_output.c
new file mode 100644
index 0000000..ea78a67
--- /dev/null
+++ b/input_output.c
@@ -0,0 +1,70 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include<time.h>
+#include "menu.h"
+
+#define MAX_INPUT_LENGTH 10
+
+void displayMenu() {
+    printf("                              1.Input\n");
+    printf("                              2.Output\n");
+    printf("                              3.Insert\n");
+    printf("                              4.Delete\n");
+    printf("                              5.Modify\n");
+    printf("                              6.Query\n");
+    printf("                              7.Quit\n");
+    printf("Please input your option: \n");
+}
+
+void inputStudentInfo(Student students[], int* count) {
+    int numToInput;
+    char input[10];
+    printf("Please enter the number of students you want to add: ");
+    if (scanf_s("%d", &numToInput) != 1) {
+        printf("Invalid input, please enter an integer.\n");
+        return;
+    }
+    if (*count + numToInput > MAX_STUDENTS) {
+        printf("Unable to add more students, maximum capacity has been reached.\n");
+        return;
+    }
+
+    for (int i = 0; i < numToInput; i++) {
+        printf("Id: ");
+        scanf_s("%9s", students[*count].id, (unsigned)_countof(students[*count].id));
+        printf("Class: ");
+        scanf_s("%9s", students[*count].clas, (unsigned)_countof(students[*count].clas));
+        printf("Name: ");
+        scanf_s("%9s", students[*count].name, (unsigned)_countof(students[*count].name));
+        printf("Score1: ");
+        scanf_s("%lf", &students[*count].score1);
+        printf("Score2: ");
+        scanf_s("%lf", &students[*count].score2);
+        printf("Score3: ");
+        scanf_s("%lf", &students[*count].score3);
+        students[*count].score = students[*count].score1 + students[*count].score2 + students[*count].score3;
+        (*count)++;
+            start:
+            printf("continue?(yes/no)\n");
+            scanf_s("%9s", input, (unsigned)_countof(input));
+            if (strcmp(input, "yes") == 0) {
+                continue;
+            }
+            else if (strcmp(input, "no") == 0) {
+                break;
+            }
+            else {
+                printf("Wrong input,yes or noĦ£\n");
+                goto start;
+            }
+    }
+}
+void displayStudentInfo(Student students[], int count) {
+    for (int i = 0; i < count; i++) {
+        printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
+            students[i].score1, students[i].score2, students[i].score3, students[i].score);
+    }
+}
+